The test build is based on the Android 4.0.3 (ICS branch). We fixed and added many x86 specified code to let the system runs smoothly on x86 platforms, especially for tablets and netbooks. The key features contain

Kernel 3.0.8 with KMS enabled. Most tablets/netbooks can run Android-x86 in the native resolution.

OpenGL hardware acceleration for AMD Radeon and Intel chipsets. However, if you have trouble with it, you can disable it by adding HWACCEL=0 to the cmdline.